Effects of Rainfall Variability on Cassava Yield in Owerri North Local Government Area of Imo State, Nigeria

Abstract

Agriculture in Nigeria is the main source of food and major employer of labour with about 60% of the Nigerian population engaged in Agriculture. It is predominantly ran-fed and hence vulnerable to climate change. This study assessed the effects of rainfall and temperature variation on cassava in Owerri North Local Government Area of Imo State, Nigeria. Data for the study were collected from the Imo State Agricultural Development Programme for the period of 22years (1995-2017). The data were analyzed statistically and the results revealed that there was minimal variation in rainfall and temperature characteristics, which translates into proportional variability in cassava yield in Owerri North Local Government Area, during the period of study. The study also revealed poor yield with non-significant positive effect of rainfall, maximum and minimum temperature in cassava yield. With reference to the study outcome, it was recommended that weather information should be disseminated to crop farmers to equip them with proper timing, adaptation and mitigation strategies for agricultural practice in the region. This would reduce the adverse effects of climate variability on crop production. Also, it was recommended that since rainfall and temperature do not account for one hundred percent of the determinants of crop yield, other factors such as soil fertility and farm management practices should be explored in order to ensure maximum yield of crops in Owerri, Imo State of Nigeria.

Keywords: Effect, Rainfall, Variability, Cassava yield

DOI: 10.7176/JEES/9-3-12

Publication date:March 31^st 2019